JP6916241B2 - Pipe fitting structure - Google Patents

Description

The present invention relates to a pipe joint structure.

Buildings such as apartment buildings and office buildings are provided with piping structures such as drainage channels and water supply channels inside.

Such a piping structure includes a vertical pipe that penetrates each layer up and down, a horizontal branch pipe that extends inside each layer, and a pipe joint that connects these vertical pipes and the horizontal branch pipe (for example). , Patent Document 1).

Further, such a pipe joint has a problem that the noise generated is larger than that of a vertical pipe or a lateral branch pipe because fluids are merged, a direction is changed, and energy is reduced (reduction of flow velocity) inside the pipe joint. ..

Therefore, sound insulation is performed by covering the outer surface of the pipe joint with a sound insulating material.

Japanese Unexamined Patent Publication No. 2009-040940

In recent years, noise caused by the vibration generated in the above-mentioned pipe joint during drainage has become a problem, and it is required to reduce the propagation of the vibration to the building frame.

Therefore, the main object of the present invention is to solve the above-mentioned problems.

In order to solve the above problems, the present invention
Equipped with a resin pipe joint that is inserted and placed in the slab through hole formed in the floor slab.
In a pipe joint structure having a heat-expandable refractory material layer at least in a portion located in the slab through hole portion.
The pipe joint protrudes upward from the upper end of the slab through hole portion, has an upper main body portion having one or a plurality of lateral branch pipe connecting portions, a main body intermediate portion arranged in the slab through hole portion, and the slab. It is provided with a lower body portion that protrudes from the lower end of the through hole portion.
The lower part of the upper main body portion of the resin-made pipe joint, the outer peripheral portion of the heat-expandable refractory material layer, and the lower main body portion are covered with a sound-insulating and anti-vibration sheet.
A portion of the resin pipe joint located above the slab through hole is covered with a sound insulation sheet, and the lower end of the sound insulation sheet is laminated on the outside of the upper end of the sound insulation and vibration isolation sheet. The lower end of the sound insulation sheet is inserted into the slab through hole, and the sound insulation sheet is inserted into the slab through hole.
A tape-shaped member for fixing the sound insulation and vibration isolation sheet extends around the lower portion of the upper body portion so as to straddle the upper end portion of the sound insulation and vibration isolation sheet and the lower side of the upper body portion below the lateral branch pipe connection portion. Provided in the direction
Another tape-shaped member for fixing the sound insulation sheet is provided in the circumferential direction of the pipe joint so as to straddle the lower end portion of the sound insulation sheet and the sound insulation / vibration isolation sheet.

According to the present invention, according to the above configuration, the sound insulation and vibration isolation performance can be further enhanced and the vibration propagation to the building can be reduced.

It is a vertical sectional view of the pipe structure and the building which provided the pipe joint structure which concerns on embodiment of this Embodiment. It is an enlarged vertical sectional view of the pipe joint structure of FIG. It is a figure which shows the state which covered the pipe joint structure of FIG. 2 with a sound insulation vibration isolation sheet. It is an enlarged view around the upper end portion of the sound insulation and vibration isolation sheet of FIG. It is sectional drawing of the sound insulation vibration isolation sheet attached to a pipe joint. It is sectional drawing of the sound insulation sheet. It is an enlarged view of the lower part of the lateral branch pipe connection part of FIG. It is the same figure as FIG. 3 when a spacer is used. It is the same figure as FIG. 3 which shows the mounting state of the high sound insulation sheet. It is the same figure as FIG. 8 which shows the mounting state of the high sound insulation sheet. It is sectional drawing of the high sound insulation sheet. It is sectional drawing of the sound insulation vibration isolation sheet attached to the drainage pipe member.

Hereinafter, the present embodiment will be described in detail with reference to the drawings.
1 to 12 are for explaining this embodiment.

<Structure> The configuration will be described below.

As shown in FIG. 1, in a building 1 such as an apartment house or an office building, pipes such as a drainage channel and a water supply channel are provided inside the building 1.

Such a piping structure (piping structure) includes vertical pipes 4 and 5 that vertically penetrate the floor slabs 3 that constitute the floor of each floor, horizontal branch pipes 6 that extend inside each floor, and these vertical pipes. A pipe joint 7 for connecting the pipes 4 and 5 and the lateral branch pipe 6 is provided.

In this case, the vertical pipes 4 and 5 and the horizontal branch pipe 6 are resin drainage pipe members. The pipe joint 7 extends in the vertical direction, and has a tubular joint body 13 having vertical pipe connecting portions 11 and 12 at its upper end and lower end, and a lateral branch pipe provided on a side surface of the joint body 13. It is assumed to have a connecting portion 14.

The pipe joint 7 is made of resin. The pipe joint 7 is inserted and arranged in the slab through hole portion 15 formed in the floor slab 3.
It is assumed that the resin pipe joint 7 has a heat-expandable refractory material layer 16 at least in a portion located in the slab through hole portion 15.

Here, the pipe joint 7 is mainly composed of a resin composition such as vinyl chloride resin having flame retardancy. The pipe joint 7 is inserted and arranged in the slab through hole portion 15 so that the lateral branch pipe connecting portion 14 is located above the upper surface of the floor slab 3. Then, the slab through hole portion 15 in which the resin pipe joint 7 is inserted and arranged is closed by the mortar 17.

Next, a specific structure (pipe joint structure) of the pipe joint 7 will be described with reference to FIG. The joint main body 13 of the pipe joint 7 is mainly composed of three joint components, an upper main body portion 21, a main body intermediate portion 22, and a lower main body portion 23.

Of these, the upper main body portion 21 is a portion that mainly protrudes upward from the slab through hole portion 15, and has an upper vertical pipe connecting portion 11 and a single or a plurality of lateral branch pipe connecting portions 14. is doing. The upper vertical pipe connecting portion 11 and the lateral branch pipe connecting portion 14 are used as expansion / contraction sockets for connecting the vertical pipe 4 and the lateral branch pipe 6 so as to be able to absorb the influence of thermal expansion and contraction, respectively. ing. The telescopic sockets are provided on the tubular socket body 25, the rubber seal packing 26 inserted and arranged at the end of the socket body 25, and the end of the socket body 25, respectively. It is assumed to have a ring cap portion 27 which is externally fitted and holds the seal packing 26. The expansion / contraction socket is adhesively fixed to the mounting openings 28 formed on the upper end portion and the side surface of the upper main body portion 21 in a mounted state.

The main body intermediate portion 22 is a portion mainly inserted and arranged in the slab through hole portion 15. The main body intermediate portion 22 has a cylindrical shape, and has a lower connection port 31 formed at the lower end of the upper main body 21 and an upper connection port 32 formed at the upper end of the lower main body 23. It is designed to be inserted in between and fixed by adhesion. The heat-expandable refractory layer 16 described above is formed in the intermediate portion 22 of the main body. Therefore, the main body intermediate portion 22 is mainly composed of the heat-expandable refractory material layer 16. For the heat-expandable refractory material layer 16, a polyvinyl chloride-based resin composition containing heat-expandable graphite or the like is used. The main body intermediate portion 22 has a three-layer structure in which, for example, the inner circumference and the outer circumference of the heat-expandable refractory layer 16 are coated with a coating layer made of a heat-expandable graphite-free polyvinyl chloride resin composition. It can be something like that.

The lower main body portion 23 is a portion that mainly protrudes downward from the slab through hole portion 15, and has a lower vertical pipe connecting portion 12 at the lower end portion. In this case, the lower main body portion 23 is a tubular body having a tapered shape. The lower standing pipe connecting portion 12 is a fixed receiving port in which the upper end portion of the standing pipe 5 is inserted and adhesively fixed.

Further, inside the upper main body portion 21, a first swirl vane 35 that receives drainage from the upper standing pipe 4 and the lateral branch pipe 6 is provided. Further, a second swivel blade 36 may be provided inside the main body intermediate portion 22 as needed. Further, a third swivel blade 37 is provided inside the lower main body portion 23. These swivel blades 35 to 37 are mainly for merging drainage, changing the direction, reducing energy (reducing the flow velocity), and the like, and are likely to be a source of noise. The configuration of the pipe joint 7 is not limited to the above.

In contrast to the above basic or overall configuration, this embodiment has the following configuration.

(1) As shown in FIG. 3, the outer peripheral portion of the heat-expandable refractory material layer 16 in the resin pipe joint 7 is covered with a sound-insulating and vibration-proof sheet 41 having sound-insulating and vibration-proofing properties. .. At this time, as shown in the partially enlarged view of FIG. 4, the upper end portion of the sound insulation and vibration isolation sheet 41 is projected upward from the upper end portion of the slab through hole portion 15 (or the upper surface of the floor slab 3).
Then, as shown in FIG. 5, the sound insulation and vibration isolation sheet 41 has a multi-layer structure having an inorganic fiber layer 42 on the inside and a modified asphalt layer 43 on the outside.

Here, the sound insulation / vibration isolation sheet 41 mainly covers the intermediate portion 22 of the main body. In this case, both the main body intermediate portion 22 and the lower main body portion 23 are covered. As a result, the lower end portion of the sound insulation / vibration isolation sheet 41 is projected below the lower end portion of the slab through hole portion 15. The sound insulation and vibration isolation sheet 41 is assumed to have at least an inner surface layer formed by the inorganic fiber layer 42 and an outer surface layer formed by the modified asphalt layer 43. A polyester-based non-woven fabric 45 (adhesive layer) or the like for enhancing the adhesiveness between the inorganic fiber layer 42 and the modified asphalt layer 43 may be provided. Further, the surfaces of the inorganic fiber layer 42 and the modified asphalt layer 43 may be provided with a polyester-based non-woven fabric 45 or the like for protecting them and improving their appearance. The sound insulation and vibration isolation sheet 41 is attached to a pipe joint 7 or the like by using a tape-shaped member 44.

(2) As shown in FIG. 3, a portion (upper main body portion 21) of the resin pipe joint 7 located above the slab through hole portion 15 is covered with a sound insulating sheet 46. Then, the lower end portion of the sound insulation sheet 46 is inserted into the slab through hole portion 15.
The upper main body 21 may be covered with the same sound insulation and vibration isolation sheet 41 as described above. In this case, the sound insulation sheet 46 has a single-layer structure made of a soft vinyl chloride resin having a thickness of about 1.2 mm, as shown in FIG. The inner surface layer of the sound insulation sheet 46 may be provided with a polyester-based non-woven fabric 45 or the like. The sound insulation sheet 46 is attached to a pipe joint 7, a sound insulation vibration isolation sheet 41, or the like by using a tape-shaped member 52.

(3) As already described above, a lateral branch pipe connecting portion 14 that can be connected to the lateral branch pipe 6 is provided at a portion of the resin pipe joint 7 located above the slab through hole portion 15. There is.
Therefore, as shown in FIG. 7, at least the position of the resin pipe joint 7 in the height direction is maintained between the lower portion of the lateral branch pipe connecting portion 14 and the floor slab 3, and the resin is used. A vibration isolator 47 for preventing the propagation of vibration from the pipe joint 7 made of the above to the floor slab 3 may be intervened and installed.

Here, the anti-vibration member 47 can be the same as the above-mentioned sound-insulating and anti-vibration sheet 41 (including the thickness and the like). Then, the distance between the lower portion of the lateral branch pipe connecting portion 14 and the upper surface of the floor slab 3, or the lower portion of the lateral branch pipe connecting portion 14 and the sound insulating and vibration isolating sheet 41 protruding upward from the upper surface of the floor slab 3. It is preferable that the distance from the upper end portion of the vibration isolator member 47 is substantially equal to or slightly narrower than the thickness of the anti-vibration member 47. The vibration isolator 47 may be installed so as to be wound around the outer periphery of the lateral branch pipe connecting portion 14.

(4) Alternatively, as shown in FIG. 8, the sound insulation / vibration isolation sheet 41 may be wound around the outer peripheral portion of the heat-expandable refractory material layer 16 via the spacer 51.
Then, the sound insulation and vibration isolation sheet 41 is fixed at the position of the spacer 51 by the tape-shaped member 44, whereby the sound insulation and vibration isolation sheet 41 is fixed by the tape-shaped member 44.
A gap portion 53 is formed between the sound insulation and vibration isolation sheet 41 and the outer peripheral portion of the heat-expandable refractory material layer 16.

Here, the spacer 51 and the tape-shaped member 44 are used to prevent the sound insulation / vibration isolation sheet 41 from being crushed and unable to exhibit the sound insulation performance and the vibration isolation performance. The size of the gap 53 is set by the thickness of the spacer 51. The thickness of the sound insulation and vibration isolation sheet 41 and the size of the gap portion 53 are set within a range that can be inserted into the slab through hole portion 15.

In the figure, the lower end of the sound insulation sheet 46 is installed away from the upper end of the sound insulation / vibration isolation sheet 41, but it may be installed so as to abut against the upper end of the sound insulation / vibration isolation sheet 41. It may be installed so as to cover the outside of the upper end portion of the seat 41.

(5) The spacer 51 and the tape-shaped member 44 are provided at or near the upper end of the slab through hole 15.

Here, the spacer 51 and the tape-shaped member 44 may also be provided at the lower end of the slab through hole portion 15. The tape-shaped member 44 can be appropriately attached in the vertical direction, the circumferential direction, and the like. The tape-shaped member 44 in the circumferential direction located on the uppermost side or the lowermost side is preferably attached at a position outside the slab through hole portion 15.

(6) More specifically, the inorganic fiber layer 42 is made of glass wool.
Further, the spacer 51 is made of foam tape.
Then, the tape-shaped member 44 is made of butyl rubber tape.

Here, as the glass wool constituting the inorganic fiber layer 42 of the sound insulation and vibration isolation sheet 41, for example, one having a density of 50 kg / cm ³ and a thickness of about 10 mm can be used. Further, as the modified asphalt layer 43 of the sound insulation / vibration isolation sheet 41, for example, a material having a thickness of about 3.5 mm can be used. The tape-shaped member 52 to be attached to the sound insulation sheet 46 may be a butyl rubber tape, but in this case, a vinyl chloride tape is used.

Further, as shown in FIG. 9 (corresponding to FIG. 3) or FIG. 10 (corresponding to FIG. 8), a resin pipe joint 7 is inserted into the slab through hole portion 15, and the slab through hole portion 15 is formed by the mortar 17. After being closed, the lower part of the resin pipe joint 7 and the upper end of the lower standing pipe 5 located below the slab through hole 15 are covered with a high sound insulation sheet 61. Is also good.

As shown in FIG. 11, the high sound insulation sheet 61 has a multi-layer structure having an organic fiber layer 62 such as PET felt on the inside and a soft vinyl chloride resin layer 63 on the outside. In this case, the organic fiber layer 62 has, for example, a surface density of about 300 g / m ² and a thickness of about 10 mm. Further, the soft vinyl chloride resin layer 63 has a thickness of, for example, about 1.0 mm. Although the upper end of the high sound insulation sheet 61 is installed away from the lower surface of the floor slab 3 in the figure, it may be installed so as to abut against the lower surface of the floor slab 3. Further, the high sound insulation sheet 61 may be used to cover the upper main body portion 21.

(7) Then, with respect to the drainage pipe structure in which resin drainage pipe members (standing pipes 4, 5 and lateral branch pipes 6, etc.) are connected by using the pipe joint structure described above.
The outer peripheral portion of the resin drainage pipe member is covered with a multi-layered sound insulation and vibration isolation sheet 67 having an inorganic fiber layer 65 on the inside and a modified asphalt layer 66 on the outside as shown in FIG. (See FIGS. 3, 8 to 10).

Here, for the inorganic fiber layer 65 of the sound insulation and vibration isolation sheet 67, for example, ^{glass wool having a density of 120 kg / cm 3} and a thickness of about 10 mm is used. Further, as the modified asphalt layer 66 of the sound insulation / vibration isolation sheet 67, for example, one having a thickness of about 3.5 mm is used. The inner surface layer of the inorganic fiber layer 65, the outer surface layer of the modified asphalt layer 66, and the intermediate layer between the inorganic fiber layer 65 and the modified asphalt layer 66 are provided with a polyester-based non-woven fabric 45 or the like, respectively. You may. Although the sound insulation and vibration isolation sheet 67 is installed so that the upper end and the lower end of the pipe joint 7 are exposed in the figure, it may be installed so as to cover the upper end and the lower end of the pipe joint 7. ..

(8) As already described above, it is assumed that the above-mentioned building 1 has the above-mentioned drainage piping structure.

<Action / Effect> According to this example, the following action / effect can be obtained.

(Action effect 1)
The resin pipe joint 7 is inserted and arranged in the slab through hole portion 15 formed in the floor slab 3. Then, a resin drainage pipe member (standing pipes 4, 5 and lateral branch pipes 6 and the like) is connected to the resin pipe joint 7. As a result, it is possible to construct a drainage pipe structure that penetrates the floor slab 3 and extends between a plurality of layers. The drainage pipe structure described above is assembled from the lower side, for example.

Then, the resin pipe joint 7 described above has a heat-expandable refractory material layer 16 at least in a portion located in the slab through hole portion 15. As a result, when a fire breaks out, the heat-expandable refractory layer 16 expands to close (shield) the slab through-hole portion 15 so that the flame can be stopped and the fire can be prevented from spreading to different layers.

On the other hand, in the drainage piping structure described above, noise and vibration are generated by the drainage flowing inside. When this noise or vibration is transmitted to the living room, it causes a decrease in habitability. Such noise and vibration are most likely to occur inside the pipe joint 7 where drainage merging, direction change, and energy reduction (flow velocity reduction) are performed. Moreover, since the pipe joint 7 is installed in the slab through hole portion 15 formed in the floor slab 3, noise and vibration generated in the pipe joint 7 are easily transmitted directly to the living room through the floor slab 3. ..

Therefore, the outer peripheral portion of the heat-expandable refractory material layer 16 in the resin pipe joint 7 is covered with a sound-insulating and vibration-proofing sheet 41 having sound-insulating and vibration-proofing properties. Moreover, the upper end portion of the sound insulation and vibration isolation sheet 41 is projected upward from the upper end portion of the slab through hole portion 15. As a result, the pipe joint 7 is not in direct contact with the floor slab 3 due to the intervention of the sound insulation and vibration isolation sheet 41, so that the noise and vibration generated in the pipe joint 7 are highly prevented from being transmitted to the living room through the floor slab 3. Noise and vibration can be reduced by hindering the sound insulation and vibration isolation sheet 41 having sound insulation and vibration isolation properties.

At this time, the sound insulation and vibration isolation sheet 41 has a multi-layer structure having an inorganic fiber layer 42 on the inside and a modified asphalt layer 43 on the outside. The inner inorganic fiber layer 42 has low density and rigidity, and has an extremely low resonance frequency, so that it is difficult to transmit vibration. Further, the modified asphalt layer 43 on the outer side has a characteristic that it is difficult to transmit vibration because the specific gravity is high and the resonance frequency is extremely low. As a result, the transmission of noise and vibration from the resin pipe joint 7 to the floor slab 3 (or the building 1) is effectively prevented by the multiple sound insulation and vibration isolation effects of a plurality of materials having different sound insulation and vibration isolation principles. be able to.

The sound insulation and vibration isolation sheet 41 is constructed so as to have an inorganic fiber layer 42 on the inside and a modified asphalt layer 43 on the outside, and a modified asphalt layer 43 on the inside and an inorganic substance on the outside. It is considered that the construction is carried out so as to have the fiber layer 42, but as a result of the experiment, it was confirmed that the obtained sound insulation and vibration isolation effects are different, and the former is more effective than the latter. rice field.

Further, the inner inorganic fiber layer 42 is flame-retardant and has a large amount of space inside. Further, the modified asphalt layer 43 on the outside has a property of becoming soft at a high temperature. As a result, the heat-expandable refractory layer 16 expanded at the time of a fire enters the space of the inorganic fiber layer 42, and the outer modified asphalt layer 43 softened at a high temperature adheres to the inner inorganic fiber layer 42. It was also confirmed that the shielding property against the slab through-hole portion 15 was improved and the fire resistance performance was further improved by further entering the space of the inorganic fiber layer 42. It was also confirmed that the time until the slab through hole portion 15 was closed was shorter than that in the case of only the heat-expandable refractory material layer 16.

(Action effect 2)
A portion (upper main body portion 21) of the resin pipe joint 7 located above the slab through hole portion 15 was covered with a sound insulating sheet 46. Then, the lower end portion of the sound insulation sheet 46 is inserted into the slab through hole portion 15. As a result, when a gap is created between the sound insulation and vibration isolation sheet 41 and the mortar 17 in the event of a fire, smoke is provided to cover the outside of the gap so that smoke leaks to the upper floor through this gap. It can be prevented by the sound insulation sheet 46.

(Action effect 3)
At least, the anti-vibration member 47 was installed between the lower part of the lateral branch pipe connecting portion 14 and the floor slab 3. As a result, the position of the resin pipe joint 7 (horizontal branch pipe connection portion 14) in the height direction is maintained, and the floor slab 3 from the resin pipe joint 7 (horizontal branch pipe connection portion 14) is maintained. It is possible to prevent the propagation of vibration to.

(Action effect 4)
Alternatively, the spacer 51 and the tape-shaped member 44 may be used to wind and fix the sound insulation and vibration isolation sheet 41 around the outer peripheral portion of the heat-expandable refractory layer 16 (in the resin pipe joint 7). .. By fixing the spacer 51 and the tape-shaped member 44 in this way, it is possible to firmly fix the sound insulation / vibration isolation sheet 41 while preventing excessive pressure from being applied to the sound insulation / vibration isolation sheet 41. It is possible to prevent a problem that the sound insulation / vibration isolation sheet 41 (inorganic fiber layer 42) is crushed and its functions (sound insulation / vibration isolation function and fire resistance function) cannot be exhibited. Further, after the resin pipe joint 7 is installed in the slab through hole portion 15, the tape-shaped member 44 can be peeled off from the sound insulation / vibration isolation sheet 41, if necessary. As a result, the sound insulation and vibration isolation sheet 41 (inorganic fiber layer 42) can be returned to the initial state, and its function can be fully exhibited.

Further, the sound insulation and vibration isolation sheet 41 was fixed so as to form a gap portion 53 with the outer peripheral portion of the heat-expandable refractory material layer 16. As a result, the gap portion 53 becomes a space for blocking sound and vibration, so that the sound insulation and vibration isolation layer can be increased, and the sound insulation and vibration isolation function can be further enhanced.

(Action effect 5)
The spacer 51 and the tape-shaped member 44 are provided at the upper end of the slab through hole 15 or at a position near the upper end thereof. Since sound and vibration are more easily transmitted along the surface than inside the floor slab 3, the spacer 51 and the tape-shaped member 44 are located at or near the end of the slab through hole 15 closest to the surface of the floor slab 3. By providing the above, it is possible to effectively prevent the transmission of sound and vibration from the resin pipe joint 7 to the surface of the floor slab 3. As a result, the transmission of sound and vibration along the surface of the floor slab 3 can be reduced, and the sound insulation and vibration isolation performance of the building 1 can be improved.

(Action effect 6)
The inorganic fiber layer 42 was made of glass wool. As the glass wool, for example, one having a density of 50 kg / cm ³ and a thickness of about 10 mm can be used. Further, as the modified asphalt layer 43, a layer having a thickness of about 3.5 mm can be used. Further, the spacer 51 was made of foam tape. Then, the tape-shaped member 44 was made of butyl rubber tape. By using these, the above-mentioned action and effect can be actually obtained.

Further, a resin pipe joint 7 is inserted into the slab through hole portion 15, and after the slab through hole portion 15 is closed by the mortar 17, the resin pipe joint 7 is located below the slab through hole portion 15. As shown in FIG. 11, the lower portion of the pipe joint 7 and the periphery of the upper end portions of the lower standing pipes 4 and 5 may be covered with a high sound insulation sheet 61. Thereby, the sound insulation performance can be further improved.

(Action effect 7)
The drainage pipe structure is formed by connecting resin drainage pipe members (standing pipes 4, 5 and lateral branch pipes 6, etc.) using the pipe joint structure described above. In this drainage pipe structure, the outer peripheral portion of the resin drainage pipe member is covered with a sound insulation and vibration isolation sheet 67 having a multi-layer structure having an inorganic fiber layer 65 on the inside and a modified asphalt layer 66 on the outside. As a result, the same action and effect as described above can be obtained for the pipe joint structure, and the sound insulation and vibration isolation effect similar to that for the pipe joint 7 can be obtained for the drainage pipe member by the sound insulation and vibration isolation sheet 67. can.

(Action effect 8)
The building 1 provided with the drainage pipe structure can obtain the same effects as described above.

Although the embodiments of the present invention have been described in detail with reference to the drawings, the embodiments are merely examples of the present invention. Therefore, the present invention is not limited only to the configuration of the embodiment, and it goes without saying that the present invention includes a design change or the like within a range that does not deviate from the gist of the present invention. Further, for example, when a plurality of configurations are included in each embodiment, it goes without saying that possible combinations of these configurations are included even if there is no particular description. Further, when a plurality of examples and modifications are disclosed as those of the present invention in the embodiment, possible combinations of configurations straddling these are included even if there is no particular description. Of course. Further, it goes without saying that the configuration depicted in the drawings is included even if there is no particular description. Furthermore, when there is a term such as "etc.", it is used to mean that it includes the equivalent. In addition, when there are terms such as "almost", "about", and "degree", they are used to mean that they include those with a range and accuracy that are generally accepted.

1 Building 3 Floor slab 4 Standing pipe (drainage pipe member)
5 Standing pipe (drainage pipe member)
6 Horizontal branch pipe (drainage pipe member)
7 Pipe fitting 14 Horizontal branch pipe connection 15 Slab through hole 16 Fireproof material layer 41 Sound insulation vibration isolation sheet 42 Inorganic fiber layer 43 Modified asphalt layer 44 Tape-like member 46 Sound insulation sheet 47 Vibration isolation member 51 Spacer 53 Void part 65 Inorganic Fiber layer 66 Modified asphalt layer 67 Sound insulation and vibration isolation sheet

Claims (7)

Equipped with a resin pipe joint that is inserted and placed in the slab through hole formed in the floor slab.
In a pipe joint structure having a heat-expandable refractory material layer at least in a portion located in the slab through hole portion.
The pipe joint protrudes upward from the upper end of the slab through hole portion, has an upper main body portion having one or a plurality of lateral branch pipe connecting portions, a main body intermediate portion arranged in the slab through hole portion, and the slab. It is provided with a lower body portion that protrudes from the lower end of the through hole portion.
The lower part of the upper main body portion of the resin-made pipe joint, the outer peripheral portion of the heat-expandable refractory material layer, and the lower main body portion are covered with a sound-insulating and anti-vibration sheet.
A portion of the resin pipe joint located above the slab through hole is covered with a sound insulation sheet, and the lower end of the sound insulation sheet is laminated on the outside of the upper end of the sound insulation and vibration isolation sheet. The lower end of the sound insulation sheet is inserted into the slab through hole, and the sound insulation sheet is inserted into the slab through hole.
A tape-shaped member for fixing the sound insulation and vibration isolation sheet extends around the lower portion of the upper body portion so as to straddle the upper end portion of the sound insulation and vibration isolation sheet and the lower side of the upper body portion below the lateral branch pipe connection portion. Provided in the direction
A pipe joint structure characterized in that another tape-shaped member for fixing the sound insulation sheet is provided in the circumferential direction of the pipe joint so as to straddle the lower end portion of the sound insulation sheet and the sound insulation vibration isolation sheet. Equipped with a resin pipe joint that is inserted and placed in the slab through hole formed in the floor slab.
In a pipe joint structure having a heat-expandable refractory material layer at least in a portion located in the slab through hole portion.
The pipe joint protrudes upward from the upper end of the slab through hole portion, has an upper main body portion having one or a plurality of lateral branch pipe connecting portions, a main body intermediate portion arranged in the slab through hole portion, and the slab. It is provided with a lower body portion that protrudes from the lower end of the through hole portion.
The lower part of the upper main body portion of the resin-made pipe joint, the outer peripheral portion of the heat-expandable refractory material layer, and the lower main body portion are covered with a sound-insulating and anti-vibration sheet.
The sound insulation and vibration isolation sheet is wound around the outer peripheral portion of the heat-expandable refractory material layer via a spacer, and at the same time.
The sound insulating antivibration sheet is fixed by the tape-like member the position of the spacer,
The spacer is provided between the upper end portion of the sound insulation and vibration isolation sheet and the outer surface of the upper main body portion below the lateral branch pipe connecting portion.
The tape-shaped member is formed on the outer surface of the upper end portion of the sound insulation and vibration isolation sheet, the upper main body below the lateral branch pipe connecting portion of the upper main body, and above the position where the spacer is provided. A pipe joint structure characterized in that it is provided so as to straddle the lower part in the circumferential direction. Equipped with a resin pipe joint that is inserted and placed in the slab through hole formed in the floor slab.
In a pipe joint structure having a heat-expandable refractory material layer at least in a portion located in the slab through hole portion.
The pipe joint protrudes upward from the upper end of the slab through hole portion, has an upper main body portion having one or a plurality of lateral branch pipe connecting portions, a main body intermediate portion arranged in the slab through hole portion, and the slab. It is provided with a lower body portion that protrudes from the lower end of the through hole portion.
The outer peripheral portion of the resin-made pipe joint located in the slab through hole is covered with a sound-insulating and vibration-proof sheet having sound-insulating and vibration-proofing properties.
A tape-shaped member for fixing the sound insulation and vibration isolation sheet extends around the lower portion of the upper body portion so as to straddle the upper end portion of the sound insulation and vibration isolation sheet and the lower side of the upper body portion below the lateral branch pipe connection portion. Provided in the direction
The tape-shaped member has a pipe joint structure characterized in that it is located at a position above the slab through hole portion. The pipe joint structure according to claim 3.
A pipe joint structure characterized in that the upper end portion of the sound insulation and vibration isolation sheet projects upward from the upper end portion of the slab through hole portion. Equipped with a resin pipe joint that is inserted and placed in the slab through hole formed in the floor slab.
In a pipe joint structure having a heat-expandable refractory material layer at least in a portion located in the slab through hole portion.
The pipe joint protrudes upward from the upper end of the slab through hole portion, has an upper main body portion having one or a plurality of lateral branch pipe connecting portions, a main body intermediate portion arranged in the slab through hole portion, and the slab. It is provided with a lower body portion that protrudes from the lower end of the through hole portion.
The outer peripheral portion of the resin-made pipe joint located in the slab through hole is covered with a sound-insulating and vibration-proof sheet having sound-insulating and vibration-proofing properties.
A tape-shaped member for fixing the sound insulation and vibration isolation sheet extends around the lower portion of the upper body portion so as to straddle the upper end portion of the sound insulation and vibration isolation sheet and the lower side of the upper body portion below the lateral branch pipe connection portion. Provided in the direction
The tape-shaped member is located above the slab through hole and is located above the slab through hole.
A portion of the resin pipe joint located above the slab through hole is covered with a sound insulating sheet.
Another tape-like shape that fixes the sound insulation sheet so as to straddle the lower end of the sound insulation sheet and the sound insulation / vibration isolation sheet in a state where the outside of the upper end portion of the sound insulation / vibration isolation sheet is covered with the lower end portion of the sound insulation sheet. A pipe joint structure characterized in that members are provided in the circumferential direction of the pipe joint. Equipped with a resin pipe joint that is inserted and placed in the slab through hole formed in the floor slab.
In a pipe joint structure having a heat-expandable refractory material layer at least in a portion located in the slab through hole portion.
The pipe joint protrudes upward from the upper end of the slab through hole portion, has an upper main body portion having one or a plurality of lateral branch pipe connecting portions, a main body intermediate portion arranged in the slab through hole portion, and the slab. It is provided with a lower body portion that protrudes from the lower end of the through hole portion.
The outer peripheral portion of the resin-made pipe joint located in the slab through hole is covered with a sound-insulating and vibration-proof sheet having sound-insulating and vibration-proofing properties.
A tape-shaped member for fixing the sound insulation and vibration isolation sheet is provided in the circumferential direction of the pipe joint so as to straddle the upper end portion of the sound insulation and vibration isolation sheet and the lower side of the horizontal branch pipe connection portion of the pipe joint.
The upper portion of the tape-shaped member is located above the upper surface of the slab through hole portion, and the lower portion of the tape-shaped member is located below the upper surface of the slab through hole portion. Characterized pipe joint structure. The pipe joint structure according to claim 6, wherein the tape-shaped member is a butyl rubber tape.

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